Can a pressure gauge replace a vacuum pressure gauge?
Thread Content
Can a shock-resistant pressure gauge be used in place of the vacuum pressure gauge at the pump inlet?
Gauge pressure is a general term for measuring pressure, which includes vacuum pressure. When setting up measuring instruments, it is necessary to select pressure gauges with ranges that correspond to the predetermined pressure parameters. Vacuum pressure gauges and pressure gauges that do not meet the specified design parameters cannot be used interchangeably.
Shock-resistant pressure gauges should be used for the pressure gauges at the pump’s inlet and outlet. Vacuum pressure gauges are those capable of measuring negative pressures; whether to use such gauges depends on the process conditions at the pump’s inlet, as well as on the required range of the pressure gauge. If negative pressures occur at the pump’s inlet, ordinary shock-resistant pressure gauges cannot be used as a substitute.
How do you measure it with negative pressure using the table you sent below?
Gauge pressure meters are fine for measuring positive pressure; however, they cannot be used as a substitute for ordinary pressure meters when negative pressure is involved
There is a pressure-vacuum combined schedule; you can give it a try!
This post was last edited by qugd on 2020-10-13 at 10:01. Pressure gauges are generally gauge pressure gauges; they do not display negative values, meaning there are no scales showing pressures below atmospheric pressure, with 0 representing gauge pressure. In contrast, vacuum pressure gauges can display pressures below atmospheric pressure, starting from 0 gauge pressure but showing negative values, or starting from a vacuum level of 0 pressure. As for regular pressure gauges, the reference pressure is simply the atmospheric pressure of their surrounding environment； As for the vacuum pressure gauge, its reference pressure is 0 pressure. Do you think it can be a substitute?
I don’t understand why a pressure gauge needs to be installed at the pump’s inlet; the type of gauge to use depends on the operating conditions